Spring bed-bottom.



G. A. MELLON.

SPRING BED BOTTOM. APPLICATION fun D5015, 1913.

,994,373, Patented Apr. 21, 1914.

hwanbor':

4 v e. Makkon UNITED 'STrflfEfi PATENT OFFICE.

GEORGE A. MELIQN, OF ST. LOUIS, MISSOURI.

"SPRING BED-BOTTO1VL Specification of Application filed December 15,1913v Serial No. 806.789.

T0 all 'ui/w-m it may con/1 "n Be it known that I, uiEORGE A. Mummy acitizen of the United States of iin'ierira. und'a resident of the cityof St. Louis and State of idissouri, hase invented certain new and metalimprovements in Spring: ill-d- Bottoms, of whi h the follownrgas a Full.1

clear, and exact description, referen e being bad to the accompanyingdrawing, i'ormine' a part of this specification.

My invention relates: to a bed spring, an has for it; j ct the prodution of a very resilient bed pring adapted to yield throughout, its l ngh. and ei,-ii.-trin-h-il to withstand screw strains: without injury tothe various spring tlilt'ltlll,-;.

Prior to this invention bed pi-inns have come under one. of thefollowing clusnrs: First, spiral wring.v :ula iteil to yield rerticallyand supported by a rigid base. The usual form of rigid lam consistoftran:-- verwv slats, or nonw'ielding' wires erond, web springs yieldingly eoinierted to the ends of a rigid frame,

Spiral s 'n'ings arranged throughout the bed sprinp drlirtnre. yieldireelv and form a cushion for all part-i of the body of -1 perhOil usingthe. bed spring hi t when subjected to the weight. iii an illllhllilllyheavy person, the piral iprings are strained beyond their elastic limit,and, owing to the rigid bake below the. springs. they do not form a conl'ortable support when compressed beyond cert-ainli[nitsv 'lln-relorethese spiral springs are freqncntl impaired by ex easiire (m n pressionupon the rigid base. and ttt-l'lQSt their resilience i5 iii-ute -iallyutlect'ed by such rigid base. Another objectionable feature found in thespiral vomprer ion springs as nrdiinirily Used is that the springl-ii.ltl(.'\lll'u 1uu t lit onto a rigid bare whi h lies wholly betweenthe side rails of theber', and sitltil wring Hll'llt'ftitltlv are oftena Ill Wilt on ureount of the many variations in the. didanci: betweenthe side rails of different beds.

1 b springs having their ends secured to a riJjid frame may be made.interrhuugeable to lit beds" made by difl'erent manuf:n turei' nt=pri'1gs of this kind arenot of Huiforni ilien e tln mighout theqn-l'ace of the bed.

prises a rigid frame adapted to fit any standard bed, a flexible frameyieldingly connected to said rigid frame, compre sion gsprings supportedby said flexible frame I and a second flexible frame connecting theupper ends of said eompresnon hl)llll{, 'l'he i :onipre. sion springsare dintribnted j throughout-the structure to form meushion for allparts. of the body of the user, and owing; to the flexibility of theyicldin; bottom frame, one hide ot' the apring ntructure may be depre edby the Weight of a heavy person \riihunt materially dixtorting the otherblll'. ut the spring" structure. it will I albo be noted iluit theyielding; lower l'ranie 'serre': to ltll(f'.(' the spiral 'onipre.i:ionsprings of exewdre strains, which would be present. it the spiralsprings were upported by a non-yielding have.

My lIi\'rIl[lUlt is aho to be di tiuguished from an old springll'lltilll't which C(JlisiiniS of a rigid frame hm ine end rails, aspring \i'eb stretched from end rail to end rail and lying llllslttherewith. i-piral npriugs below the middle of said iretrlu-d web, andtrlissi i t the eniln of said trlnsdilae \YH'US being at taehed to theend rail The resilience of a spring of this kind in mainly in thestretched web and the middle oi this w b is reinforced by spiral springsrenting on a non-yielding support. The head and shoulders of the imzrare not cushioned by the spiral springs at the middle of the. bed.

Figure l i a side tlt'Yztiltitl, partly broken away, of a bed pringembodying the features oi my invention. Fig. II is a horizontalhttlitill tulu-n approximately or; the l=nc ll ll, Fig. l. showing-theyielding frame that supportthe compressionsprings.

In the. art-ompanying drawings: designates a rigid frame comprising endrails 15 .-;id0 rails 2, below sa d end rails, and conne ting members 3,connecting the end rails to the sire rails. The connecting members 3 arepreferably provided with arms 4 adaptlike wires supporting mid spiralspringg ill) the wirgs 7 and 8 is held under tension by with saidtransverse wires. The compression springs 5 are secured to the flexiblebottom frame at the junctions of the wires 7 and 8, and the ends of thelongitudinal wires 8 are connected to the end rails by the tensionsprings (S. The flexible web formed by the tension springs 0, so thatsaid flexible web lies flush with the rigid end rails l, and theflexible top frame or web B, having no direct connection with the rigidfra'me, is free to yield at all points throughout the structure. Whenthe spiral springs 5 are subjected to excessive pressure, the strainsare transmitted through the wires 8 to the tension springs (i, so as torelieve the springs 5 of strains that would impair their inherentelasticity, thereby preventing injury to the springs 5 and at the sametime providing an auxiliary cushioning device for unusua ly heavypersons.

I claimz- 1. The combination in a bed bottom, of a rigid frame includingend rails, lower. and upper pliable frames, the said lower frame beingconnected to the end rails of said rigid frame and free of connectionwith the side of said rigid frame, and compression springs between saidpliable frames.

The combination in a bed bottom, of a rigid frame including end rails, amain spring structure comprising lower and upper pliable frames andcompression springs between said pliable frames. and won siiringsconnecting said lower pli l'rame to the end rails only of said i inframe.

' he erm'ilnnatmn Ina bed bollo-n of a 1 frame in luding end rails, anda a: shun-luricomprising; pliable l w-r.

and upper frames, and compression springs between said frames, the saidlower frame including longitudinal wires and transverse wires, thelongitudinal wires having connection with the end rails of said rigidframe and the transverse wires bein free of direct connection with saidrigid rame.

4. A bed bottom comprising a rigid frame, a pair of pliable framesarranged one above the other, tension springs connecting the lowerpliable frame to said rigid frame, and compression springs between saidpliable frames, the upper pliable frame having no direct connection withsaid rigid frame, the said upper pliable frame being supported wholly bysaid compression springs.

5. A. bed bottom comprising a rigid frame having end rails, a pliablelower frame in the form of a wire web extending substantially from endto end of said rigid frame, tension springs nnecting the ends of saidwire web to said end. rails and thereby holding said web, under tension,at the level of said end rails, compression springs on said wire web,and a pliable upper frame secured to said compression springs.

('3. A bed bottom comprisingarigidfranie, a pliable upper frame, apliable lower frame consisting of longitudinal and transverse wires.tension springs connecting said lon- M gitudinal wires to said rigidframe, and compression springs arranged between said pliable upper andlow or frames and secured to the said pliable lower frame at thejunction of said longitudinal and transverse wires.

GEOR ill A. MELT/ON. In the presence of- E. K. {In-inn. E. B. int:

